body {
  width: 90%;
  max-width: 900px;
  margin: 2em auto;
  font: 0.9em/1.2 Arial, Helvetica, sans-serif;
}

.container {
  display: grid;
  grid-template-columns: 1fr 3fr;
  grid-gap: 20px;
}

header,
footer {
  border-radius: 5px;
  padding: 10px;
  background-color: rgb(207, 232, 220);
  border: 2px solid rgb(79, 185, 227);
}

aside {
  border-right: 1px solid #999;
}

/* my code */
header {
  grid-column: 1/3;
  grid-row: 1;
}

article {
  grid-column: 2;
  grid-row: 2;
}

aside {
  grid-column: 1;
  grid-row: 2;
}

footer {
  grid-column: 1/3;
  grid-row: 3;
}/*# sourceMappingURL=index.css.map */